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Instructor details hydroponic system pH, EC and initial fertilizer steps for Phoenix site
Summary
An instructor explained target electrical conductivity (EC) and pH ranges, calibration needs, and an initial fertilizer procedure for a hydroponic system, noting Phoenix water hardness and an initial sulfuric acid adjustment.
An instructor outlined steps to prepare and maintain a hydroponic system, including target electrical-conductivity and pH ranges, calibration guidance for meters, and plans to add fertilizer immediately.
The instructor said the system uses two meters and that one is already calibrated: "With the system, we get the we get 2 different meters. 1 is the EC, electrical conductivity." On target conductivity, the instructor said the system should be kept at around "1.5 less than 2 or 1,500 less than 2,000 depending on which scale you're on." On acidity, the instructor advised keeping the pH "between, 5 and a half and 6 and a half. 5.5 to 6.5," adding that specific crops may prefer slightly different ranges.
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